/// <summary>
/// Do the intersection of two sets
/// </summary>
/// <param name="set1"></param>
/// <param name="set2"></param>
/// <returns></returns>
public Set Intersect(Set set1, Set set2)
{
if (set1 == null && set2 == null)
{
return new Set();
}
else if (set1 == null)
{
return (Set)set2.GetClone();
}
else if (set2 == null)
{
return (Set)set1.GetClone();
}
else
{
Set newSet = new Set();
foreach(int element in set1.list)
{
if (set2.Contains(element))
{
newSet.Add(element);
}
}
return newSet;
}
}
/// <summary>
/// Substract set2 from set1
/// </summary>
/// <param name="set1"></param>
/// <param name="set2"></param>
/// <returns></returns>
public Set Substract(Set set1, Set set2)
{
if (set1 == null)
{
return new Set();
}
if (set2 == null)
{
return (Set)set1.GetClone();
}
Set newSet = (Set)set1.GetClone();
foreach (int element in set2.list)
{
if (newSet.list.Contains(element))
{
newSet.list.Remove(element);
}
}
return newSet;
}
/// <summary>
/// Union two sets
/// </summary>
/// <param name="set1"></param>
/// <param name="set2"></param>
/// <returns></returns>
public Set Union(Set set1, Set set2)
{
if (set1 == null && set2 == null)
{
return new Set();
}
else if (set1 == null)
{
return (Set)set2.GetClone();
}
else if (set2 == null)
{
return (Set)set1.GetClone();
}
else
{
Set newSet = new Set();
foreach (int element in set1.list)
{
newSet.Add(element);
}
foreach (int element in set2.list)
{
newSet.Add(element);
}
return newSet;
}
}